Control knob



FIG. 1 is a perspective view of a control knob for a wire feeder;

FIG. 2 is a front perspective view of the control knob of FIG. 1;

FIG. 3 is a rear perspective view of the control knob of FIG. 1;

FIG. 4 is a bottom perspective view of the control knob of FIG. 1

FIG. 5 is a top plan view of control knob of FIG. 1;

FIG. 6 is a front elevational view of the control knob of FIG. 1; and,

FIG. 7 is a rear elevational view of the control knob of FIG. 1.

The broken lines shown in the figures are for illustrative purposes only and form no part of the claimed invention. 

The ornamental design for a control knob, as shown and described. 